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05-28-2020, 02:44 PM - 4 Likes   #5866
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QuoteOriginally posted by Dartmoor Dave Quote
doing photography in bright sunlight
Both wonderful shots, Dave.

Near Ventura Harbor, Calif. DA18-135 on K10D:


05-31-2020, 10:49 AM - 7 Likes   #5867
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Magical Sunset
Taken in Dinosaur National Monument
DA* 50-135mm F2.8

06-01-2020, 03:39 PM - 5 Likes   #5868
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Against the light! Pentax K10D, Tamron SP AF 90mm F2.8 Di Macro.



An update on my Sigma 17-70mm Contemporary. There is nothing wrong with the lens.
I put it on my K-3 and it performed perfectly and it is pin sharp at 1:1 pixel peeping. When i try my DA 18-55mm WR and my Tamron 90mm Macro on the K10D (see above image) they are both as sharp as the Sigma on the K-3 on the same subject.
So, the K10D's AF is working fine and the Sigma 17-70 is also working fine but it just seems to have a little focus problem at times on the K10D. But is is really only noticeable if I pixel peep at 1:1 so I am not going to lose sleep over it.

I just don't want anyone to have any negative thoughts about the Sigma 17-70 as it is a great lens with great build quality.
06-01-2020, 05:08 PM   #5869
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QuoteOriginally posted by rayallen Quote
Against the light! Pentax K10D, Tamron SP AF 90mm F2.8 Di Macro.



An update on my Sigma 17-70mm Contemporary. There is nothing wrong with the lens.
I put it on my K-3 and it performed perfectly and it is pin sharp at 1:1 pixel peeping. When i try my DA 18-55mm WR and my Tamron 90mm Macro on the K10D (see above image) they are both as sharp as the Sigma on the K-3 on the same subject.
So, the K10D's AF is working fine and the Sigma 17-70 is also working fine but it just seems to have a little focus problem at times on the K10D. But is is really only noticeable if I pixel peep at 1:1 so I am not going to lose sleep over it.

I just don't want anyone to have any negative thoughts about the Sigma 17-70 as it is a great lens with great build quality.
Well, that answered my question! Something unique about that specific lens/camera combo. Interesting!

Nice image, by the way!

06-01-2020, 05:13 PM   #5870
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QuoteOriginally posted by rayallen Quote
There is nothing wrong with the lens
Good to know, Ray. Nice shooting, too
06-01-2020, 05:49 PM   #5871
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QuoteOriginally posted by subsea Quote
Well, that answered my question! Something unique about that specific lens/camera combo. Interesting!

Nice image, by the way!
Thank, subsea. Yes, it is a bit strange and it is a relief to know that the Sigma is as good as I always thought it was.

---------- Post added 02-06-20 at 10:50 AM ----------

QuoteOriginally posted by paulh Quote
Good to know, Ray. Nice shooting, too
Thanks, Paul. Yes, it is good to know. I won't be parting with the Sigma.
06-02-2020, 09:08 AM - 9 Likes   #5872
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Ponies, Windy Post Cross, yada, yada, yada. . . just makes me wish they'd bring back Kodachrome.



With El Cheapo, of course.
06-02-2020, 02:38 PM   #5873
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QuoteOriginally posted by rayallen Quote
Against the light! Pentax K10D, Tamron SP AF 90mm F2.8 Di Macro.

I just don't want anyone to have any negative thoughts about the Sigma 17-70 as it is a great lens with great build quality.
Excellent shot that proofs the reputation of the Tamron 90mm 2.8 Di Macro.

Nothing against the Sigma 17-70, I respect your views very much.
I decided to choose the 17-50 Sigma because I seldom use more than 50 mm FL.
I am happy with the 17-50. Took some shots in a pub with exremel low light levels when I was on my way back home.
Used the K10d at 1600 ISO. Very pleased with the results.

06-02-2020, 02:48 PM   #5874
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QuoteOriginally posted by Fluegel Quote
Excellent shot that proofs the reputation of the Tamron 90mm 2.8 Di Macro.
Thanks. Yes, the Tamron 90mm works well from very close focus to infinity.

QuoteOriginally posted by Fluegel Quote
Took some shots in a pub with extremely low light levels when I was on my way back home.
Used the K10d at 1600 ISO. Very pleased with the results.
I must try some ISO 1600 shots again one day.
06-03-2020, 03:31 PM   #5875
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QuoteOriginally posted by rayallen Quote
Thanks. Yes, the Tamron 90mm works well from very close focus to infinity.



I must try some ISO 1600 shots again one day.
Strange to get potentially useful info from PetaPixel, but this is interesting and might explain some of your results, Ray. Canít wait to see the next installment!

Lensrentals Discovers a Lot of Variation in Flange Distance Between Cameras with the Same Mount
06-03-2020, 08:10 PM   #5876
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QuoteOriginally posted by subsea Quote
Strange to get potentially useful info from PetaPixel, but this is interesting and might explain some of your results, Ray. Canít wait to see the next installment!

Lensrentals Discovers a Lot of Variation in Flange Distance Between Cameras with the Same Mount
Thank you for that link, Mark. A very interesting test and it could explain the difference when mounting the same lens on two different cameras or why different lenses don't work the same on the same camera.
Thanks go to Dartmoor Dave as he was the one who got that original comparison to happen.

My current activity is that I have switched my DA 18-135mm from my K-3 to the K10D and put the Sigma 17-70mm on the K-3. All good. Nothing to report so far!
06-04-2020, 10:18 AM - 1 Like   #5877
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QuoteOriginally posted by Dartmoor Dave Quote
Ponies, Windy Post Cross, yada, yada, yada. . . just makes me wish they'd bring back Kodachrome.



With El Cheapo, of course.
I have to say... when you get results like this, why do you even miss Kodachrome? Must be nostalgia.

I think this is better than what any 35mm film could ever do.
06-04-2020, 10:58 AM - 1 Like   #5878
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QuoteOriginally posted by ChristianRock Quote
I have to say... when you get results like this, why do you even miss Kodachrome? Must be nostalgia.

I think this is better than what any 35mm film could ever do.
Dave, I think CR makes some valid points!

Here's a couple taken during the lake flooding back in 2015. Sigma 17-70 DC macro on K10D. A fair amount of pp was required for the 2nd pic, as they were in heavy shadow.




Last edited by paulh; 06-04-2020 at 01:17 PM.
06-04-2020, 11:09 AM - 1 Like   #5879
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QuoteOriginally posted by ChristianRock Quote
I have to say... when you get results like this, why do you even miss Kodachrome? Must be nostalgia.

I think this is better than what any 35mm film could ever do.
Completely agree!
06-04-2020, 02:06 PM - 2 Likes   #5880
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Thanks folks. I'm just flouncing all round the forum throwing hissy fits at everyone the moment, so sorry about the "yada, yada. . ." above. But hey, what better way to vent the stresses of real world life than by being obnoxious to people on the internet? It's almost as if it was designed for it.
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